<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <title>404</title>
    <style>
        img{
            margin: 0;
            padding: 0;
            vertical-align: middle;
            outline: none;
        }
        .img{
            width: 544px;
            height: 272px;
            margin: 30px auto 0;
            display: block;
        }
    </style>
</head>
<body>
    <img src="http://yinhu.oschina.io/season-summer.jpg" alt="" class="img">
</body>
</html>